AFMC Chemistry 2004

AFMC–Past papers CHEMISTRY - UNSOLVED PAPER - 2004

SECTION – I (Total Marks :50) Single Correct Answer Type There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate

01 Problem Monds process is used for Ni A1 Fe Cu

Problem 02 Which of the following yield both alkane and alkene? Kolbe's reaction Williamson's synthesis Wurtz reaction Sandmeyer reaction

Problem 03 Bessemer converter is used for steel wrought iron pig iron cast iron

Problem 04 Lanthanides and actinides resemble in electronic configuration oxidation state ionization energy formation of complexes

Problem 05 Mg and Li are similar in their properties due to same elm ratio same electron affinity same group same ionic potential

Problem 06 How will you separate mixture of two gases? fractional distillation technique Grahams law of diffusion technique osmosis chromatography

Problem 07 Which of these have no unit? electronegativity electron affinity ionisation energy excitation potential

Problem 08 The addition of unsymmetrica! reagents to unsymmetrical alkenes occurs in such a way that the negative part of the addendum goes to that carbon atom of the double bond which carries lesser number of hydrogen atoms" is called by Saytzeff rule Markownikoff's rule Kharasch effect Anti-Saytzeff rule

Problem 09 The molecule of CO2 has angle 180°. It can be explained on the basis of sp3hybridisation sp2hybridisation sp hybridisation d2Sp3hybridisation

Problem 10 Fusion bomb involves combination of lighter nuclei into bigger nucleus destruction of heavy nucleus into smaller nuclei combustion of oxygen explosion of TNT.

Problem 11 Which of the following gas mixture is used by the divers inside the sea? O2 + He O2 + Xe O2 + Ar O2 + N2

Problem 12 Photoelectric effect is maximum in Cs Na K Li

Problem 13 Which of the following cuts ultraviolet rays? soda glass Crooke's glass pyrax None of these

Problem 14 Naphthalene is a/an ionic solid covalent solid metallic solid molecular solid

Problem 15 Acetone is mixed with bleaching powder to give chloroform acetaldehyde ethanol phosgene

Problem 16 4.4 g of CO2 contains how many litres of CO2 at STP? 2.4 litre 2.24 litre 44 litre 22.4 litre

Problem 17 Aniline reacts with which of these to form Schiff base? acetic acid benzaldehyde acetone NH3

Problem 18 Which of these do not contain - COOH group? aspirin benzoic acid picric acid salicylic acid

Problem 19 EDTA has coordination number 3 4 5 6

Problem 20 Write the IUPAC name of CH3CH2COOH. ethyl formic acid ethyl carboxylic acid ethane methanoic acid propanoic acid

Problem 21 Octane number can be changed by isomerisation alkylation cyclisation all of these

Problem 22 Gasoline has composition C8 – C12 C2 - C5 C6 – C11 None of these

Problem 23 Oxygen molecule is diamagnetic paramagnetic ferromagnetic ferrimagnetic

Problem 24 ∆G = ∆H -T∆S was given by Faraday Kirchoff Einstein Gibbs-Helmholtz

Problem 25 Acetone reacts with Grignard reagent to form 3° alcohol 2° alcohol ether No reaction

Problem 26 Wood spirit is known as methanol ethanol acetone benzene

Problem 27 Proton was discovered by Chadwick Thomson Goldstein Bohr

Problem 28 Which of the following is a basic dye? congo red aniline yellow alizarin indigo

Problem 29 Colemnite is Ca[B3O4(OH)2]2H2O Ca2B6O11-5H2O Ca(OH)2 Na2B4O7.2H2O

Problem 30 Which of the following can't be used in Friedal- Craft's reactions? FeCl3 FeBr2 A1C13 NaCl

Problem 31 Lapis lazuli is ferrous sulphate copper sulphate sodium alumino silicate zinc sulphate

Problem 32 "Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute". Above statement is Henry law Dulong and Petit law Raoult's law Le-Chatelier's principle

Problem 33 Bohr's theory was modified to give the concept of elliptical orbits by Davison Rutherford Hund Sommerfeld

Problem 34 Which of the following metal has stable carbonates? Na Mg A1 Si

Problem 35 What is the net charge on ferrous ion? +2 +3 +4 +5.

Problem 36 Oxidation number of carbon in CH2C12 is 0 2 3 5

Problem 37 Internal energy is partly potential and partly kinetic totally kinetic totally potential none of these

Problem 38 Breeding arc method cannot be used to prepare colloidal solution of which of the following? Pt Fe Ag Au

Problem 39 Which of the following oxides of nitrogen is solid? NO2 N2O N2O3 N2O5

Problem 40 Containers A and B have same gases. Pressure, volume and temperature of A are all twice that of B, then the ratio of number of molecules of A and B are 1 : 2 2 1 : 4 4

Problem 41 The ratio of area covered by second orbital to the first orbital is 1 : 2 1 : 16 8 : 1 16 : 1.

Problem 42 Among them intensive property is mass volume surface tension enthalpy

Problem 43 Stainless steel is an alloy of iron and copper nickel and chromium manganese zinc

Problem 44 Orion has a unit vinyl cyanide caroling glycol two dimensional

Problem 45 Structure of H2O2 is planar non-planar (three dimensional') linear two dimensional

Problem 46 Triple point of water is 273 K 373 K 203 K 193 K

Problem 47 What is the % of acetic acid present in vinegar? 6 - 10% 70 - 80% 7 - 8% 90 - 100%

Problem 48 Nitrous oxide is known as breathing gas laughing gas exercising gas laboratory gas

Problem 49 The element used for dating the ancient remains is Ni C-14 C-12 Rd

Problem 50 Percentage of silver in German silver is 0% 1% 5% none of these

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AFMC Chemistry 2004

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AFMC Chemistry 2004